Super-hybrid composite laminate for neutron shield and preparation method of super-hybrid composite laminate

A composite material layer, super-hybrid technology, used in shielding, chemical instruments and methods, synthetic resin layered products, etc., can solve the problem of difficult to balance shielding performance and mechanical properties, and achieve excellent shielding performance and mechanical properties, bonding strength. The effect of strong and good ray shielding performance

Active Publication Date: 2018-04-24
BEIHANG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, cement-based shielding materials are mostly used for radiation shielding of large protective devices, but it is difficult to balance the shielding performance and mechanical properties of such materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0037] The invention provides a method for preparing a neutron-shielding ultra-hybrid composite laminate, comprising the following steps:

[0038] (1) Epoxy resin, curing agent and acetone are mixed to obtain a resin matrix solution;

[0039] The boron carbide, coupling agent and acetone are mixed and then activated to obtain modified boron carbide;

[0040] (2) After mixing the resin matrix solution, modified boron carbide, moderator and neutron absorber, add acetone to adjust the density to 0.94~1.10g / cm 3 , to obtain the basic mixture;

[0041] (3) Prepare a wet prepreg with the basic mixture and basalt fibers as raw materials, and obtain a solid prepreg after drying;

[0042] (4) Alternately stacking the solid prepreg and the metal plate to obtain a basic molding structure;

[0043] The metal plate is an aluminum plate or an aluminum alloy plate;

[0044] (5) Hot pressing the basic molding structure to obtain a neutron shielding super-hybrid composite material laminate...

Embodiment 1

[0071] Dissolve 34 parts of DDS curing agent with acetone, and then mix with 100 parts of E51 resin until the solution is uniform and clear to obtain a resin matrix solution.

[0072] Weigh 25 parts of boron carbide powder, 15 parts of acetone and 5 parts of KH560 coupling agent, dissolve the KH560 coupling agent in acetone, and then add it to the boron carbide powder at a temperature of 10°C Stir evenly and activate at constant temperature for 10 minutes to prepare surface-modified boron carbide powder.

[0073] Mix surface-modified boron carbide powder, 10 parts by weight of polyethylene and 10 parts by weight of boron oxide with the resin matrix solution, and adjust the solution density to 0.96 / cm with acetone 3 .

[0074] The unidirectional wet prepreg is prepared by a wet prepreg machine, the total mass content of the wet prepreg epoxy resin and curing agent is 28wt%, and the surface density is 340g / m 2 .

[0075] The prepared wet prepreg was aired at room temperature ...

Embodiment 2

[0081] Dissolve 34 parts of DDS curing agent with acetone, and then mix with 100 parts of E51 resin until the solution is uniform and clear to obtain a resin matrix solution.

[0082]Weigh 50 parts of boron carbide powder, 30 parts of acetone and 10 parts of KH560 coupling agent, dissolve the KH560 coupling agent in acetone, and then add it to the boron carbide powder at a temperature of 10°C Stir evenly and activate at constant temperature for 10 minutes to prepare surface-modified boron carbide powder.

[0083] Mix surface-modified boron carbide powder, 20 parts by weight of paraffin wax and 20 parts by weight of micaceous iron oxide with the resin matrix solution, and adjust the solution density to 1.06 / cm with acetone 3 .

[0084] A random wet prepreg is prepared by a wet prepreg machine, the total mass content of the wet prepreg epoxy resin and curing agent is 32wt%, and the surface density is 390g / m 2 .

[0085] The prepared wet prepreg was aired at room temperature t...

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Abstract

The invention provides a super-hybrid composite laminate for neutron shield. The super-hybrid composite laminate comprises a metal plate and a fiber enhanced resin-based composite layer which are alternately laminated, wherein the fiber enhanced resin-based composite layer is prepared from basalt fiber, epoxy resin, modified boron carbide, a curing agent, a moderator and a neutron absorber. The provided fiber enhanced resin-based composite layer has excellent shielding performance and mechanical performance, has the density of 2.36-2.42 g/cm<3>, the tensile strength of 1,120-1,160 MPa, the tensile modulus of 82-85 GPa and the interlaminar shear strength of 78-85 MPa, has the <252>CF neutron source shielding factor Kf (15 mm) of 2.65-3.02 and the neutron shield rate Ath10 (10mm) of 99.88%-99.89%. The invention further provides a preparation method of the composite laminate. The preparation method is simple and convenient to operate and easy to implement.

Description

technical field [0001] The invention relates to the technical field of shielding materials, in particular to a neutron shielding super-hybrid composite material laminate and a preparation method thereof. Background technique [0002] With the rapid development of national defense scientific research, radiation medicine and atomic energy industry, more and more fields have gradually adopted nuclear energy to replace traditional energy as a new energy supply method. While nuclear energy brings many conveniences to human beings, people pay more and more attention to the radiation damage associated with its use. For example, neutron radiation with strong penetrating power will pose a great threat to human life safety, environment and equipment. Therefore, shielding against such radiation is a necessary means to make nuclear energy better serve mankind. [0003] For shielding materials in the prior art, the matrix materials are mainly cement and polyolefin. Among them, cement-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L23/06C08L91/06C08K9/06C08K9/02C08K3/34C08K3/38C08K7/10C08K3/04C08J5/24B32B27/38B32B27/26B32B27/12B32B9/00B32B9/04B32B15/20B32B15/092B32B7/08B32B7/10B32B37/06B32B37/10B32B37/26G21F1/10
CPCB32B5/02B32B7/08B32B7/10B32B15/092B32B15/20B32B27/12B32B27/26B32B27/38B32B37/06B32B37/10B32B37/26B32B2260/046B32B2262/10B32B2311/24B32B2363/00C08J5/24C08J2363/00C08J2423/06C08J2491/06C08K3/04C08K3/34C08K3/38C08K7/10C08K9/02C08K9/06C08K2003/387G21F1/103
Inventor 杨中甲顾轶卓李敏王绍凯张佐光
Owner BEIHANG UNIV
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